Comparison between bond strength of lithium disilicate with preheated composite, flowable composite and resin cement

Abstract Objective: investigation of the microshear bond strength between lithium disilicate with preheated viscous composite, flowable composite and resin cement by comparison their strength. Material method: forty five samples were prepared divided into three groups; group, group group. Materials injected custom made plastic transparent molds (2 mm height, 2 diameter) on surface discs that previously treated ceramic etchant (hydrofluoric acid 4.5%) primer (silane coupling agent). Then, Microshear test was performed to universal testing machine. Results tabulated statistically analyzed for each Results: highest recorded followed cement. Conclusions: is an excellent material in cementation restorations. Keywords: Lithium disilicate; Preheated composite;